Stairs to the Roof Puns

They walk up to the bartender and order. The girl orders water and the man orders magic water. The girl asks him "What's magic water?" The man replies "Its just like water but when you drink it you can fly." The girl exclaims "I don't believe you, prove it." So the two run up the stairs to the roof and the man jumps off and glides to the ground safely. The girl runs back down the stairs and meets back with the guy. She demands that he should give her some magic water to fly. So he does and the both go back up to the roof and jump off. The guy glides down and lands safely while the girl just feel and died. The guy reentered the bar and the bartender told him "You can be a real dick when you are drunk Superman"